Spinal Extradural Hemangioblastoma Roentgenographically Visualized with Diodrast at Operation and Successfully Removed

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Abstract
Extradural hemangioblastomas of the spine appear to be relatively uncommon. Four instances of intraspinal hemangioblastoma were recorded by Elsberg (1) in a series of 253 intraspinal tumors, and but one of these was extradural. So-called hemangiomas of the vertebrae resulting in cord compression are more common. In 1943 Blackford (2) collected 65 such cases from the literature, including one of his own. On the basis of his microscopic description of the tumor, Blackford's case, and probably some of the others as well, were most likely hemangioblastomas, that is, true neoplasms composed of growing angioblasts rather than hemangiomas (angiomas), which are vascular malformations. This distinction has been clearly made by Cushing and Bailey (3), although considerable confusion of terminology still exists with respect to these lesions. It is the purpose of this communication to relate an experience which, so far as is known to the writer, is unique. A pulsating hemangioblastoma arising from the spinal extradur...

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